Photos: Top 10 public gardens in the U.S.

10. Chanticleer: Wayne, PennsylvaniaCelebrating its 20th anniversary as a public garden in 2013, those visiting this romantic retreat can marvel at more than 5,000 plant varieties that cover the grounds' 35 acres. Open April 3 through November 3, tickets are $10 for adults; children 12 and under get in free.